693-binary-number-with-alternating-bits

DevGod

Vtuber

Caution

DevGod needs to write an editorial for this problem!

js

/**
 * @param {number} n
 * @return {boolean}
 */
var hasAlternatingBits = function(n) {
    let prev = n&1;
    n >>= 1;
    while(n>0){
        if( (n&1) === prev){
            return false;
        }
        prev = n&1;
        n >>= 1;
    }
    return true;
};